The inferior cochlear vein: surgical aspects in cochlear implantation

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• 作者：Rui Guo ; HongLei Zhang ; Wei Chen…
• 关键词：Cochlea ; Human ; Inferior cochlear vein ; Cochlear implants
• 刊名：European Archives of Oto-Rhino-Laryngology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：273
• 期：2
• 页码：355-361
• 全文大小：1,168 KB
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• 作者单位：Rui Guo (1) (2)
  HongLei Zhang (1) (3)
  Wei Chen (1) (2)
  XiaoQuan Zhu (3)
  Wei Liu (1) (4)
  Helge Rask-Andersen (1) (4)
  
  1. Department of Surgical Sciences, Head and Neck Surgery, Section of Otolaryngology, Uppsala University Hospital, 751 85, Uppsala, Sweden
  2. Department of Otolaryngology, General Hospital of Air Force, Beijing, 100142, China
  3. Department of Otolaryngology, Air Force Aviation Medicine Research Institute Affiliated Hospital, Beijing, 100089, China
  4. Department of Otolaryngology, Uppsala University Hospital, 751 85, Uppsala, Sweden
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Otorhinolaryngology
  Neurosurgery
  Head and Neck Surgery
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1434-4726

文摘

The patency of the inferior cochlear vein (ICV) may be challenged in cochlear implantation (CI) due to its location near the round window (RW). This may be essential to consider during selection of different trajectories for electrode insertion aiming at preserving residual hearing. Venous blood from the human cochlea is drained through the ICV. The vein also drains blood from the modiolus containing the spiral ganglion neurons. Surgical interference with this vein could cause neural damage influencing CI outcome. We analyzed the topographical relationship between the RW and ICV bony channel and cochlear aqueduct (CA) from a surgical standpoint. Archival human temporal bones were further microdissected to visualize the CA and its accessory canals (AC1 and AC2). This was combined with examinations of plastic and silicone molds of the human labyrinth. Metric analyses were made using photo stereomicroscopy documenting the proximal portion of the AC1, the internal aperture of the CA and the RW. The mean distance between the AC1 and the anterior rim of the RW was 0.81 mm in bone specimens and 0.67 mm assessed in corrosion casts. The AC1 runs from the floor of the scala tympani through the otic capsule passing parallel to the CA to the posterior cranial fossa. The mean distance between the CA and AC1 canal was 0.31 and 0.25 mm, respectively. Keywords Cochlea Human Inferior cochlear vein Cochlear implants